.wrapper{
    position: relative;
    overflow: hidden;
    height: 300px;
    width: 550px;
    margin: 0 auto;
    border: 2px solid #9e9e9e;
}
.successive{
    position: absolute;
    height: 100%;
    width: 3300px;
}
.slid{
    height: 100%;
    width: 550px;
}
img{
    height: 100%;
    width: 100%;
}

/* 两箭头 */
.wrapper > div{
    position: relative;
    top: 50%;
    width: 20px;
    height: 30px;
    z-index: 1;
    font-size: 20px;
    background-color: rgba(255, 255, 255, 0.3);
    line-height: 30px;
    cursor: pointer;
}
.left-arrow{
    border-top-right-radius: 20px;
    border-bottom-right-radius: 20px;
    text-indent: -2px;
}
.right-arrow{
    border-top-left-radius: 20px;
    border-bottom-left-radius: 20px;
    text-indent: 2px;
}


/* .bar{
    z-index: 1;
    position: absolute;
    width: 100px;
    height: 16px;
    left: 50%;
    margin-left: -50px;
    margin-top: 8px;
    top: 90%;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
} */
/* .dot{
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background-color: royalblue;
} */